Wall adapter



FIG. 1 is a front view of a wall adapter;

FIG. 2 is a back view of the wall adapter;

FIG. 3 is a left view of the wall adapter;

FIG. 4 is a right view of the wall adapter;

FIG. 5 is a top plan view of the wall adapter;

FIG. 6 is a bottom view of the wall adapter; and,

FIG. 7 is a perspective view of the wall adapter.

The broken lines in the drawings depict portions of the wall adapter that form no part of the claimed design. 

CLAIM The ornamental design for a wall adapter, as shown and described. 